/Engine/Plugins/Importers/USDImporter/Source/USDExporter/Public/USDConversionBlueprintContext.h
Clears any opinions for the 'unreal' render context surface output of MaterialPrim within LayerToAuthorIn. If LayerToAuthorIn is empty it will clear opinions from all layers of the stage's layer stack.
Whether we successfully cleared the opinions or not
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Conversion utils") bool RemoveUnrealSurfaceOutput ( const [FString](API\Runtime\Core\Containers\FString) & PrimPath, const [FFilePath](API\Runtime\CoreUObject\UObject\FFilePath) & LayerToAuthorIn )